Your argument fails on the basis that teams also put safety help over Calvin Johnson and he is #1 on your chart along with many other of the WRs on that list.

This game rewind thing is pretty good.
It has a list of all the plays that you can scroll through to pick the one you want to watch.

I watched the Lions/Vikings game, and here are some of the things I observed:

The safety broke up 3 deep passes to CJ.
The safety turned the wrong way and wasn't able to help the CB on one play (he was expecting Stafford to go to a different receiver.)
CJ ran into the zone between two safeties on one play.
Basically, if the safety(ies) play(s) it correctly, the double-team stop CJ from making plays every time.